Electric heater for stock-watering tanks



w. E. mHNsoul. ELECTRIC HEATER 08 STOCK W'ATERING TANKS.

l APPLICATHINJ f iLED AUGJG. 1919. 1,334,03 Patented MaI-.16,1920.

l u INVENTOR. WILSON E J'o/mso/v.

ATTORNEYS,

STATES PATENT OFFICE.

wrnson E. foiinsoN. ernennen, INDIANA.

4ELECTRIC HEATER FOR STOCK-WATERING TANKS.

Tor atl whom it may concern Be it known that I, iWinsen E. Jonsson, acitizen of the United States, and a resident of Kempton, county ofTipton, and State of Indiana, have invented' a certain new and usefulElectric Heater for Stock-Wateri Tanks; and I 'do hereby declare thatthe {bliglowing is a full, clear, and exact description thereof,reference being had to the accompanying drawings, in which'like numeralsrefer to like parte'.

This invention relates a heating element adaptable for use in largebodies of water,`

such as live stock watering tanks, reservoirs and the like. y

The mainobject of the invention is to provide a heating element which mabe placed in the bottom of a large tank o water for heating it, will beinclosed by a water tight hous' Vfor preventing its coming in contacttherewith, and will be of such construction that the wires or cableconnecting with the heating'elementlnay extend down into the tank and beprotected from contact with the water so that the heating element andthe cable leadin thereto will not be influenced thereby. T e water tighthousing is for the purpose of protecting the' element from a scale,which forms on such element when exposed to the water. The scalecrystallzes and becomes hard, reducing the eiliciency of. the heater,being formed from the salts present inthe water.

Referrin to the drawings which are made a part of tis application,Fzigure 1 is a longitudinal section through a tank ofl water and thehousing of the heatin -element. Fig. 2 is a cross section taken on t eline 2-2v of Fi 1. f

@here is shownherein a vwater tank 10 such as is used for wateringlive-stock, in which it is desired to keep the water heated to atemperaturemost suitable for drinking purposes. The heating element 11of the resistance type is contained in a housing cons sisting of a tube1 2 supported in the brackets 13 which are provided with legs 14,whereby said housing may rest upon and be p specificati of Leim-armut.Patented Mar. V16, 1920. Application leil August 18, 19.19.- Serial No.817,918.

supported by the bottom of the tank. VOne end of .the tube 12 is clo dby the screw cap 15 which is screwed ther nand made water tight, whilethe other en'd is provided with a shouldered ring 16` adapted to bescrewed thereon and tapering outwardly, in which a reduced connectingmember 17 is adapted toy be screwed. The connecting member 17 hasmounted therein an insulating block 18 A fluid heater having alongitudinally extending electric heatin unit with adjacent terminals,a. tubular fluid-tight housing surrounding saidunit and having one endlthereof closed, said housing being provided at each end with bracketsto support the -lieater longitudinally near the bottom, of a Huidcontaining vessel, a fiuidtig'fht" coi-,

necting member mounted on th'e othelend of said tubular housing andhavinga reduced end, an insulating block mounted in said connectingmember and having a fluidtight connection therewith, a pipe connectedwith the reduced end of said connecting member and extendingjbeyond theiluid containing" vessel, and a ca le extending through said pipe andsaid eonnect member and insulated therefrom and ha g terminals extendingin spaced relation-into`said insulating b ook tocontact said heatingunit terminals, said heating element and terminels and cable beingprotected from contact with the fluid. Y U

In witness whereof vI have hereunto affixed my signature.

. 'WILSON E. JOHNSON.

